[07] In the 1970s, the percentage of obese children was about 3 percent, but the figure has increased to more than 10 percent during and since the 1990s.

＊figure＜名詞＞数値
＊increase＜動詞１＞増加する

「副-前置詞句」＋イメージ２と、イメージ１＋２つの「副-前置詞句」です。

[07] In the 1970s, the percentage of obese children was about 3 percent, but the figure has increased to more than 10 percent during and since the 1990s.

「1970年代に、肥満児の割合は約３パーセントだったが、その数値は、1990年代以降、10パーセント以上に増加した。」